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Table 2 Eigenvalues, corresponding variance contribution rate and the cumulative variance contribution rate of the questionnaire

From: Application of the extended theory of planned behavior to understand Chinese students’ intention to improve their oral health behaviors: a cross-sectional study

Construct

Range (low-high)

eigenvalues ​

Percentage variance explained(%)

cumulative Percentage variance explained(%)

Attitudes

1–7

7.434

37.168

37.168

Subjective norms

1–7

2.868

14.340

51.508

Perceived behavioral control

1–7

2.129

10.644

62.152

Behavioral intention

1–7

1.528

7.638

69.790

  1. For details of which items were included in each construct, see Table 1